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- W854409962 abstract "Generally, in order to make the water and carbon energy cycles economi-cally competitive in terms of today’s fossil and nuclear energy, energy con-versionmaterialshavetobefurtheroptimizedandthereforestudiedinmoredetail. More specifically, the fundamental details of platinum-based protonexchange membrane fuel cell (PEM-FC) catalyst degradation are still notclear (Mayrhofer et al. , 2008; Meier et al. , 2012). Missing insights can onlybe gained with an introduction of new advance characterization techniqueslike identical location transmission electron microscopy (IL-TEM) andin situ electrochemical TEM. A generally accepted technique, besides elec-trochemistry, used to study the structure of nanoparticles is a vacuum TEMequipped with numerous detectors enabling many characterizationmethods, such as electron diffraction, high-resolution TEM (HR-TEM),scanning TEM (STEM), and energy dispersive spectroscopy (EDS), whichprovide a complete description of studied nanomaterial characteristics. Thisinformation is commonly used to interpret nanoparticle activity and stabil-ity. However, the concerns still remain whether the surface structure andmorphology change of random spots is representative for the whole sampleand if the structure and morphology integrity get disrupted whennanoparticles come in contact with the atmosphere or get immersed inthe liquid electrolyte. It can reconstruct or deconstruct the metal surfacedepending on the interaction energy of thermodynamic driving forces. Itcan also change unevenly across the sample. In order to access the informa-tion of real surface structure at relevant conditions, identical locations and,more important, in situ observations are mandatory. Before IL-TEM wasthe only technique showing degradation on the same nanoparticle(Hodnik et al. , 2014; Mayrhofer et al. , 2008; Meier et al. , 2012). Combina-tion of this approach with conventional electrochemistry provides a com-plete description of the catalytic activity and stability in relation to thesurface structural characteristics." @default.
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- W854409962 date "2014-10-01" @default.
- W854409962 modified "2023-09-26" @default.
- W854409962 title "Bridging the Gap Between Electrochemistry and Microscopy: Electrochemical IL-TEM and In Situ Electrochemical TEM Study" @default.
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